Japanese More information Kanji in this term ... Kanji in this term 理 論 りGrade: 2 ろんGrade: 6 on'yomi Close Etymology Calque of English game theory, equivalent to ゲーム (gēmu, “game”) + 理論 (riron, “theory”) Noun ゲーム理(り)論(ろん) • (gēmu riron) game theory Wikiwand - on Seamless Wikipedia browsing. On steroids.